an easy way to get less noise is to increase source resolution. The if you downscale your C-mos sensor to 1/9 then you get a extremely good debarring. 6k/9 = about HD....
HD from 6k will shine like nothing else.
Video / Debayering noice will be close to none.
Pixels sharpness will be far above any of our lenses.
Then again explain to my why you would not want a 6k sensor, that you could just touch screen down to a 5k sensor... if you do not care for the extra sensor size or pixel count.
The the one and only reason to say no thanks would be economy. But then again evolution will go on and if you do not have that 6k within a years time others will... There will be cameras out there, alexa studio among others that will be preferred by a lot of DP's but with grater range, framerate, sensor size and pixel count you are still competing and probably doing so with better gear.
If you shoot for your self not renting, not counting pixels, and do not care about source resolution then you need to ask yourself... why did you get 5k in the first place..